This is a double beam-power tube with a 1 + 6 pin septar base and two pins for the plate extending out the top of the envelope. One pin is larger than the others to provide the pin-one orientation. A wire is clipped to one of the pins at the top of the tube.
Manufacturer
RCA
Place Manufactured
U. S.
Identifying Numbers
Model number
3E29
Printed in silver ink around the glass envelope.
Other number
96-PRD V1-1
Handwritten with green ink vertically on the glass envelope.